Clock



FIG. 1 is a top plan view of a clock showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a front elevational view of another embodiment thereof, otherviews being identical to those of the first embodiment;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a right side elevational view thereof, the left side viewbeing identical thereto except the rectangular button has been omitted.

The ornamental design for a clock, as shown and described.